APA (7th ed.) Citation

Radford, E. (1946). Unusual words and how they came about. Philosophical library.

Chicago Style (17th ed.) Citation

Radford, Edwin. Unusual Words and How They Came About. New York: Philosophical library, 1946.

MLA (9th ed.) Citation

Radford, Edwin. Unusual Words and How They Came About. Philosophical library, 1946.

Warning: These citations may not always be 100% accurate.